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Clean Truck Check Announcement – September 22, 2023

Friday, September 22, 2023 11:07 AM | Karla Sanchez (Administrator)

The California Air Resources Board (CARB) has posted a Notice of Regulatory Effective Date on CARB’s webpages. CARB is establishing that the effective date for sections 2196.1, subdivision (f), 2196.8, 2197, and 2197.2, subdivision (b), of the Heavy-Duty Inspection and Maintenance (HD I/M) regulation is December 31, 2023.

This means that owners of vehicles subject to the HD I/M regulation, now referred to as Clean Truck Check, must report their vehicles to CARB and pay the annual compliance fee by December 31, 2023. Vehicle owners can complete these processes through CARB’s Clean Truck Check reporting database starting in October of 2023.

Further, freight contractors, brokers, and applicable freight facilities shall verify that vehicles they contract with for services or that enter their facilities are compliant with the HD I/M regulation as of December 31, 2023.

Finally, the parts unavailability compliance time extension provisions of section 2196.8 are enacted on December 31, 2023, to provide vehicle owners a compliance extension mechanism for situations when a repair component necessary to bring a vehicle back into compliance is unavailable.

If you have any questions regarding the program, please send an email to

CARB Clean Truck Check (HD I/M) Team

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